<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div id="app">
        <button @click="showStore">显示仓库的内容</button>
        <button @click="add">加1</button>
        <h1>{{counter}}</h1>
        <h1>{{totalPrice}}</h1>
        <!-- <h1>{{this.$store.state.counter}}</h1> -->
    </div>
</body>
<script src="./node_modules/vue/dist/vue.js"></script>
<!-- 1.引入 vuex 依赖 -->
<script src="./node_modules/vuex/dist/vuex.js"></script>
<script>
    console.log(Vuex);
    /* 2.创建仓库 */
    let store = new Vuex.Store({
        //仓库中的数据
        state:{
            counter:666
        },
        getters:{
            totalPrice:function(state){
                return state.counter * 10;
            }
        },
        //改变数值的操作
        mutations:{
            increment:function(state){
                state.counter += 1;
            }
        }
    })
    let vm = new Vue({
        /* 3.配置仓库 */
        store,
        /* computed:{
            counter:function(){
                return this.$store.state.counter;
            }
        }, */
        // computed:Vuex.mapState(["counter"]),
        computed:{
            // totalPrice:function(){
            //     return this.$store.getters.totalPrice;
            // },
            ...Vuex.mapGetters(["totalPrice"]),
            ...Vuex.mapState(["counter"])
        },
        el:"#app",
        methods:{
            showStore:function(){
                console.log(this.$store);
            },
            add:function(){
                //this.$store.state.counter += 1;//直接修改 不推荐
                //提交 commit 修改数据
                this.$store.commit("increment");
            }
        }
    })
</script>
</html>